{"id":3872,"date":"2026-04-22T11:47:37","date_gmt":"2026-04-22T09:47:37","guid":{"rendered":"https:\/\/www.igeas.com\/?post_type=realizzazioni&p=3872"},"modified":"2026-04-22T11:51:45","modified_gmt":"2026-04-22T09:51:45","slug":"railway-line-ge-sampierdarena-confine-francese-new-pedestrian-underpass-and-two-lifts-to-be-built-at-pietra-ligure-railway-station-sv","status":"publish","type":"realizzazioni","link":"https:\/\/www.igeas.com\/en\/projects\/railway-line-ge-sampierdarena-confine-francese-new-pedestrian-underpass-and-two-lifts-to-be-built-at-pietra-ligure-railway-station-sv\/","title":{"rendered":"Railway line \u201cGe Sampierdarena \u2013 Confine Francese\u201d \u2013 New pedestrian underpass and two lifts to be built at Pietra Ligure railway station (SV)."},"content":{"rendered":"

Project objective<\/strong><\/p>\n

The intervention aimed to equip Pietra Ligure railway station (SV) with a new pedestrian underpass and two lifts connecting the station platform with the platform serving Track 2, in order to provide step\u2011free access to the second platform; at the time, two at\u2011grade crossings at the ends of the station platform were used.<\/p>\n

Main works<\/strong><\/p>\n

Underpass<\/em>
\nThe main structure consists of a reinforced\u2011concrete box culvert with an overall length of 21.36 m and finished internal clear dimensions of 4.40 \u00d7 2.90 m; the foundation slab, side walls and top slab are 50 cm thick.
\nFor construction, the \u201cjacked monolith\u201d (box jacking) technique was adopted: a portion of the underpass (monolith) was cast outside the railway footprint, upstream of the line, and subsequently pushed beneath the railway formation by means of a hydraulic jacking system.
\nThe final layout therefore comprises a central section corresponding to the monolith after jacking, 12.60 m long, and two lateral cast\u2011in\u2011situ sections, upstream and downstream of the monolith, 5.36 m and 3.40 m long respectively; the lift shafts and the stair\u2011ramp access structures to the platforms were also cast in situ.
\nThe \u201cjacked monolith\u201d technique provides for the installation of temporary steel girders type \u201cVerona\u201d to support the tracks resting on handling beams: this system is an effective alternative to traditional \u201crail bundles\u201d and allows, during jacking operations, a theoretical train transit speed of 80 km\/h.<\/p>\n

Temporary works<\/em>
\nTo support the excavation walls (maximum depth approx. 6.00 m below ground level), micropile retaining walls were installed in advance (first vertical row \u00d8220 mm, second rear inclined row \u00d8127.0 mm), developed along the perimeter of the stair ramps and lift shafts as well as along the perimeter of the upstream and downstream excavation areas required for construction of the in\u2011situ structures.<\/p>\n","protected":false},"featured_media":3639,"parent":0,"template":"","settore":[25,27],"class_list":["post-3872","realizzazioni","type-realizzazioni","status-publish","has-post-thumbnail","hentry","settore-railway-infrastructures","settore-geotechnical-engineering-and-rock-mechanics"],"acf":[],"yoast_head":"\nRailway line \u201cGe Sampierdarena \u2013 Confine Francese\u201d \u2013 New pedestrian underpass and two lifts to be built at Pietra Ligure railway station (SV). - IGEAS Engineering S.r.l.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.igeas.com\/en\/projects\/railway-line-ge-sampierdarena-confine-francese-new-pedestrian-underpass-and-two-lifts-to-be-built-at-pietra-ligure-railway-station-sv\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Railway line \u201cGe Sampierdarena \u2013 Confine Francese\u201d \u2013 New pedestrian underpass and two lifts to be built at Pietra Ligure railway station (SV). - IGEAS Engineering S.r.l.\" \/>\n<meta property=\"og:description\" content=\"Project objective The intervention aimed to equip Pietra Ligure railway station (SV) with a new pedestrian underpass and two lifts connecting the station platform with the platform serving Track 2, in order to provide step\u2011free access to the second platform; at the time, two at\u2011grade crossings at the ends of the station platform were used. 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